Myocardial ischemia and infarction ECG Posterior (posterolateral) acute myocardial infarction (STEMI) The heart is rotated 30° to the left in the thorax. This positions the…

ECG Myocardial ischemia and infarction Definition and Pathophysiology Posterior myocardial infarction is myocardial necrosis involving the posterior region of the left ventricle, usually as part…

…Figure 1. Left anterior fascicular block (anterior hemiblock) and left posterior fascicular block (posterior hemiblock). Left anterior fascicular block (LAFB) Left anterior fascicular block is…

…Ebstein's anomaly is characterized by the following malformations: The septal and posterior leaflets of the tricuspid valve adhere to the ventricular myocardium (failure of…

…mitral valve has an anterior leaflet and a posterior leaflet . The anterior leaflet has a semi circular shape and is firmly attached to two fifths…

…and truncal stability and investigate for a central cause. Acute vestibular syndrome is often caused by acute unilateral vestibulopathy, commonly called vestibular neuritis, but posterior…

…Choice of site The posterior superior iliac spine is the standard site for both aspiration and biopsy in adults. Here the posterior part of the…

…PE) ↓ ↑ ↑ ↓ Vital signs and measures of perfusion Parameter Normal Comment : : : Heart rate 50–100/min MAP 70–105 mmHg Target ≥ 65…

…distinguish vestibular neuritis from posterior circulation infarction. The test presupposes that the patient has spontaneous nystagmus at the time of examination and that the examiner…

…left posterior fascicular block −90° to ±180° Extreme axis deviation Amplitude criteria Criterion Threshold Suggests : : : Sokolow–Lyon S in V1 + R in V5/V6 35…

…an orthopaedic surgeon before attempting reduction. Posterior shoulder dislocation, which is often associated with fracture and requires an orthopaedic surgeon. Dislocation of a native hip…

…or no thickening (<10%) 3 Dyskinesia Paradoxical thinning and/or outward directed motion during systole 4 Aneurysmatic Diastolic deformation 5 Recommended by the American Society…

…start immediately and a defibrillator must be ready. I B Consider connecting leads V7, V8 and V9 in patients with high suspicion of posterior acute…

…form of typical atrial flutter, the reentrant circuit is confined to the right atrium and travels in a counterclockwise direction. The activation wavefront propagates in…

…post shock bradycardia, and use of biphasic defibrillators , which are standard due to superior efficacy over monophasic devices. Electrode position (anterior posterior vs. antero lateral…

…of OMI criteria—including subtle and nontraditional ECG patterns such as De Winter T waves, Wellens syndrome, posterior infarction signs, and terminal QRS distortion—compared…

…the right and left bundle branches. The left bundle branch further divides into the anterior and posterior fascicles. Both the right bundle branch and the…

…Arteries to the posterior wall (these arteries branch of after the right marginal artery) may be given off by the RCA (and otherwise the LCx…

…each leg, the highest of the dorsalis pedis and posterior tibial pressures is divided by the highest arm pressure of the two arms. Each leg…

…to the posterior surface of the patella. The shoulder The patient sits with the arm hanging relaxed and slightly internally rotated. The posterior approach is…

…facing the tongue and follow the hard palate with your index finger as a guide. 5. Advance the mask downwards along the posterior pharyngeal wall…

…resistance at the posterior pharyngeal wall after about 10–15 cm is expected. 5. Ask the patient to flex the head forward and swallow repeatedly…

…artery, which runs on the posterior aspect of the rectus muscle along its lateral border and is the commonest source of serious bleeding after paracentesis…

…mm), loculated or purely posterior effusion with no safe route for puncture — surgical drainage or pericardiotomy instead. Relative: uncorrected coagulopathy, thrombocytopenia and ongoing anticoagulant treatment…

…nerve in the posterior triangle of the neck, and the superficial nerves of the forearm and the dorsum of the hand. Preparation and equipment Chlorhexidine…

…secretions, inflamed and edematous nasal mucosa, or polyps. Examination of the posterior pharyngeal wall may reveal secretions or a cobblestoned appearance of the mucosa. Laryngoscopy…

…negative P and QRS T in lead I). Situs inversus. Left posterior fascicular block is diagnosed when the axis is between 90° and 180° with…

…negative P and QRS T in lead I). Situs inversus. Left posterior fascicular block is diagnosed when the axis is between 90° and 180° with…

…majority of cases, it is only possible to determine the ischemic/infarct area (and thus the culprit) if the ECG displays ST segment elevations. However…

…right posterior descending artery (RPDA, 4), and right posterolateral branch (RPLB, 16). The LMCA (5) bifurcates into the proximal (6), mid (7), and distal (8…

…LBB) and the right bundle branch (RBB). The left bundle branch further divides into the anterior and posterior fascicles. The bundle branches and fascicles play…

…This will result in ST segment elevations in II, aVF and III. Figure 1. Posterolateral (posterior, inferobasal) transmural ischemia causes reciprocal ST segment depressions in…

…fibers from the left bundle branch. Coronary artery dominance The coronary artery that supplies the PDA (posterior descending coronary artery), which supplies the inferior wall…

…A small, smooth or transparent object lying posteriorly or superiorly. Attempts already made and failed elsewhere. A child who cannot be kept still without sedation…